Pressure equalizing means for multiple buck pressing machines



Oct. 18, E, DAVlS PRESSURE EQUALIZING MEANS FOR MULTIPLE BUCK PRESSING MACHINES Original Filed April 5, 1928 1NVENTOR.

ATTORNEYS Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE ERNEST DAVIS, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE PROSPERITY COMPANY, INC., OE SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK PRESSURE EQUALIZING- MEANS FOR MULTIPLE BUCK PRESSING MACHINES Application filed April 5, 1928, Serial No. 267,554. Renewed November 13, 1930.

This invention relates to pressing machines as garment and laundry pressing machines, particularly machines in which one of the pressing elements comprises a plurality of members mounted to move independently of each other under the pressure of the other element and has for its object, a particularly simple and efiicient means for transferring and equalizing the pressure between one member to another. i p

The invention consists in the novel fea tures, and in the combinations and construction hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawing in which like characters designate corresponding parts in all the views. 4

Figure 1 is an enlarged front elevation, partly in section, of the pressing elements of a machine embodying a preferred form of my invention, the pressure equalizing means being shown insections.

Figure 2 is an end elevation of in Figure 1.

Figure 3 is a side elevation on a reduced scale of a complete pressing machine embodying my invention.

I have here shown my invention as embodied in a machine for pressing the neck yoke and shoulders and cuffs ofa shirt in one operation and also either the neck band of shirts with unattached collars or the collars of shirts having attached collars.

1 designates one of the pressing elements as the head or upper pressing element, and 2 designates generally the lower pressing element, the upper pressing element being usually movable toward and from the lower pressing element.

The'upper pressing element 1 is here shown as provided with three members 3, 4 and 5 which are rigid with the head 1 and the lower pressing element is multiple and comparts seen prises a plurality of members 6, 7 and 8 com- 7 plemental to the members 3, 4, and 5 and mounted to move independently of each other vertically under the pressure of the head 1. The members 3 and 6 are shaped to press 50 the neck yoke and shoulders of a shirt, and

the elements 4, 7 V and 5, 8 are shaped to press the cuffs. 1

In my Patent No. 1,682,488 issued August 28, 1928, I have shown mechanical means for equalizing the pressure between members corresponding to the members 6, 7

and 8. The present invention comprises fluid pressure equalizing means between the members 6, 7 and 8.

The fluid pressure means comprises a plurality of pressure chambers each having a movable part therein on which rests a support for one of the members 6, 7 or 8 respectively there being one pressure chamher for each member 6, 7 and 8. These pressure chambers are connected by an equalizing conduit so that the differential pressure in any one is transferred to the other and the pressure of all the members equalized;

9, 10 and 11 designate the pressure chambers for a hydraulic fluid as oil, and the movable parts therein are diaphragms 12, 13 and 14. These chambers are formed partly in a block 15 common to all of the members 6,

7 and 8 and partly by removable caps 16, 17

and 18 forming the bottoms of the chambers. The margins of the diaphragms are held between the caps and the block 15.

19 is an equalizing conduit connecting the pressure chambers. 7

Each of the members 6, 7 and 8 is formed with a support 20, 21 and 22 respectively slidable through a suitable guide opening in the block'15 and having a head 23, 24 and 25 respectively thrusting against the corre sponding diaphragm 12, 18 or 14. Obviously, any differential pressure applied to any one of the members 6, 7 or 8 by the members 3, 4 or 5 will be transferred and equalized to the other chambers through the conduit 19.

26 is a pressure gage connected to the conduit 19 or in any suitable location in the system for indicating the amount of pressure delivered.

Means is provided forincrea'sing or diminishing the pressure and this means comprises a reservoir 28 for a reserve supply of fluid, conduit means connecting the reservoir in the system, and a pump for forcing the fluid from the reserve reservoir into the chambers 9, and 11 to increase the pressure. The conduit connecting the reserve reservoir to the pressure chambers 9, 10 and 11 also has a suitable valve which when operated permits the fluid to drain back into the reserve reservoir to reduce the pressure.

29 designates the movable member as a piston of a pump movable in a cylinder or barrel 30 in the reservoir 28 and having an inlet 31 into the reservoir.

32 is an outlet chamber mounted on one side of the reservoir 28 and communicating with the pump cylinder 30.

33 is a checkvalve for preventing the back flow of fluid from the outlet chamber 32 into the pump cylinder 30.

34 is an outlet pipe leading from the chamber 32 through a pipe 35 to one of the diaphragm chambers. The pump piston 29 may be actuated in any suitable manner, it being here shown as connected to a lever 36 pivoted at 37 between its ends and having a handle 38.

Upon the operation of the lever, obviously oil will be pumped from the reservoir 28 past the check valve 33 and through the pipes 34 and 35 into the pressure chambers 9, 10 and 11 to increase the pressure therein.

The fluid may be drained back into the reservoir to decrease the pressure by opening a normally closed valve 39 connected by a pipe 40 to the pipe 35 and by a pipe 41 to the reservoir.

Obviously, if the valve 39 is open, the fluid Will drain from the diaphragm chambers and conduit 19 back into the reservoir 28 and thus decrease the pressure in the diaphragm chamber and hence, the pressure delivered by the upper pressing element 1 on the lower pressing element 2.

As will be understood by those skilled in the art, it is necessary to keep the pressure up to normal and the pressure decreases as the padding on the pressing elements becomes permanently compressed under continued use.

By my invention, not only is the pressure equalized, but it can be increased at will or decreased as after new padding is applied to one, of the pressing elements.

The block 15 is mounted upon a suitable bench 42 supported by legs 43 and the head 1 is carried by a yoke lever 44 pivoted between its ends at 45 to the frame, the rear arm of the yoke lever being connected to suitable actuating mechanism either power or foot operated.

The actuating mechanism here shown includes, a cylinder 46, a piston movable therein and having its rod 47 connected to a lever 48 which is connected by any well known motion transmitting mechanism to the rear arm of the yoke lever 44 to actuate it to close the press against the action of returning springs 49. The flow of motive fluid to and from the cylinder is controlled by suitable manually operated mechanism designated generally 50. The actuating mechanism for the head 1 forms no part of this invention.

In operation, when the press closes the members 6, 7 and 8 are free to move relatively to each other and the pressure thereon is equalized through the fluid in the diaphragm chambers 9, 10 and 11 and the equalizing conduit 19. The amount of the pressure delivered is indicated by the gage 27. When the pressure varies, the operator can increase the pressure by operating the pump handle 38, or the pressure can be decreased by opening the valve 39.

What I claim is 1. A pressing machine including cooperating pressing elements, one of which is movable toward and from the other, one of said elements including a plurality of members mounted to move relatively to each other under the pressure of the other element, and fluid pressure equalizing means between said members.

2. A pressing machine including cooperating pressing elements, one of which is movable toward and from the other, one of said elements including a plurality of members mounted to have relative movement under the pressure of the other element, means for supporting each of said members including a pressure. chamber having a movable part therein and the corresponding member of said multiple pressing element having means thrusting against said movable part and a conduit connecting the pressure chambers.

3. A pressing machine including cooperating pressing elements, one of which is movable toward and from the other, one of said elements including a plurality of members having relative movement under the pressure of the other element, means for supporting each of said members including a pressure chamber having a movable part therein and the corresponding member of the multiple pressing element having means thrusting against said movable part, a conduit connecting the pressure chambers, and means for varying the pressure in the chambers.

4. A pressing machine including cooperating pressing elements, one of which is movable toward and from the other, one of said elements including a plurality of members having relative movement under the pressure of the other element, means for supporting each of said members including a pres sure chamber having a movable part therein and the corresponding member of the pressing element having means thrusting against said movable part, a conduit connecting the pressure chambers, and means for increasing and decreasing the pressure in the pressure chambers.

5. A pressing machine including cooperating pressing elements, one of which is movable toward and from the other, one of said elements including a plurality of members mounted to move relatively to each other under the pressure of the other element, a pressure chamber for each member, a diaphragm in each chamber and each member having a support thrusting against the diaphragm, and a pressure equalizing conduit connecting the diaphragm chambers.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and in the State of New York, this 31st day of March, 1928.

ERNEST DAVIS. 

